Method used for preparing limestone powder from building waste concrete

The invention belongs to the technical field of waste concrete resource comprehensive utilization, and especially relates to a method used for preparing limestone powder from building waste concrete.According to the method, building waste concrete prepared from limestone sandstone aggregate is taken as a main raw material, appropriate amounts of limestone, mineral slag, silica fume, and the likeraw materials are adopted for co-grinding to prepare the limestone powder, and unhydrated cement particles in building waste concrete is subjected to further grinding so as to increase the strength ofconcrete after doping of the limestone powder, realize preparation of the limestone powder from the building waste concrete, reduce resource consumption and environment pollution, and realize resource cycling. 本发明涉及废弃混凝土资源综合利用技术领域，尤其是种利用建筑废弃混凝土制备石灰石粉的方法，通过以石灰岩砂石骨料制备的建筑废弃混凝土为主要原料，并辅以适量石灰石、矿渣、硅灰等原料共同磨细制备石灰石粉，并使得在建筑废弃混凝土中未水化水泥粗颗粒，通过进步粉磨后提高本石灰石粉掺入后混凝土的强度，实现以废弃建筑混凝土为原料制备石灰石粉，降低了资源消耗与环境污染，实现了资源循环再利用。